Iwo makamaka kuthetsedwa ndi mankhwala njira.Njira yochotsera ma rivets akhungu ndi njira yokhayo yamankhwala, pogwiritsa ntchito chinthu chotchedwa Cullygrat.Poyerekeza ndi njira yachikale yochotsera ndalama, ndi yosavuta, yotsika mtengo, komanso imapulumutsa antchito.Ubwino wa ma rivets akhungu ndiwotsogola kwambiri.Itha kugwiritsidwa ntchito pazitsulo za ferritic, zitsulo zopanda chitsulo kapena zigawo za aluminiyamu.
Nthawi yotumiza: Jun-02-2022